Chicago Weather: Winter Storm Should Make Waves During Thanksgiving Weekend

CHICAGO (WLS) –

The ABC7 AccuWeather team is monitoring a messy winter storm that is expected to affect travel at the end of the Thanksgiving weekend.

WATCH: Latest ABC7 AccuWeather Forecast

Before the storm on Sunday, it will rain slightly from Friday night to Saturday morning with temperatures reaching the 40's. It will be a bit mild compared to the recent weather, but with a southerly wind, it will not seem that it's doing almost 50 degrees.

A Winter Storm Watch was issued for the counties of Winnebago, Boone, McHenry, Ogle, Lee and DeKalb, from 6 am to 12 pm on Monday.

OUTLOOK SUNDAY TIME Untidy weather forecast Sunday in the Chicago area and much of the Midwest. A strong low pressure system will leave Missouri on Sunday morning. The trajectory of the low pressure system is still uncertain, but there will likely be a thick snow band from this system.

TIMING: The rain will spread in northern Illinois and northwest Indiana on Sunday morning. The rain will turn to snow from west to east during the afternoon or evening Sunday. The beginning of this change will determine the amount of snow we see. Could be very little or heavy snow.

SUNDAY MORNING: The rain is coming. Time in the 40s.

SUNDAY AFTERNOON: The rain will turn into snow from west towards the city in the afternoon. When this change occurs, it is uncertain and may not occur until Sunday evening or even at night in some areas. Time in the 30s.

SUNDAY NIGHT: Rain will turn to snow in all areas where it has not yet done so. Snow accumulation is likely in most areas during this time. How many? Depends on the change in time. Time falling in the 20s.

MONDAY MORNING: Time in the 20s. Messy morning moves with ever-falling snow and slippery spots on the roads due to the snow during the night.

HOW MUCH SNOW ?: On the map below, the shaded area in dark blue can show totals greater than 4 "+ .If the heavy snow band moves south, parts of northern Illinois could see as much.

Snow totals can range from 1 to 8 inches in the region, depending on the storm's trajectory.